
\pgfplotstableread[row sep=\\,col sep=&]{
	interval  & PT & Bxoff & Bxon \\
	DBLP      & 47  & 230  &  113 \\
	XMark100  & 222 & 793  &  436 \\
	XMark2000 & 210 &  	&  \\
	UniProt   & 379 &   &  \\ 
}\parsing